Replace tx_size_1d with tx_size_wide/high

This prepares the support to both rectangular and 2x2 transform
block sizes.

Change-Id: I3c2d4e317f6b627bb45d2273c278331bd976ee92
diff --git a/av1/common/scan.c b/av1/common/scan.c
index 945c65e..1281843 100644
--- a/av1/common/scan.c
+++ b/av1/common/scan.c
@@ -4305,7 +4305,7 @@
 
 void av1_update_neighbors(int tx_size, const int16_t *scan,
                           const int16_t *iscan, int16_t *neighbors) {
-  const int tx1d_size = tx_size_1d[tx_size];
+  const int tx1d_size = tx_size_wide[tx_size];
   const int tx2d_size = tx_size_2d[tx_size];
   int scan_idx;
   for (scan_idx = 0; scan_idx < tx2d_size; ++scan_idx) {
@@ -4336,7 +4336,7 @@
 void av1_update_sort_order(TX_SIZE tx_size, const uint32_t *non_zero_prob,
                            int16_t *sort_order) {
   uint32_t temp[COEFF_IDX_SIZE];
-  const int tx1d_size = tx_size_1d[tx_size];
+  const int tx1d_size = tx_size_wide[tx_size];
   const int tx2d_size = tx_size_2d[tx_size];
   int sort_idx;
   assert(tx2d_size <= COEFF_IDX_SIZE);
@@ -4354,7 +4354,7 @@
   int coeff_idx;
   int scan_idx;
   int sort_idx;
-  const int tx1d_size = tx_size_1d[tx_size];
+  const int tx1d_size = tx_size_wide[tx_size];
   const int tx2d_size = tx_size_2d[tx_size];
 
   for (coeff_idx = 0; coeff_idx < tx2d_size; ++coeff_idx) {